calibrating problem

so i decided to calibrate my battery on a day old mbp. I charged it and then left it charged for about 5 hours. then i let the battery drain. After it went to sleep i let it stay for 6 hours. It wasn't on anymore, so i flipped it over and checked the battery, and only one bulb was flashing. So i put in the power, and immediately pressed the power button. As my mbp started up, or restored, it was very slow. Is this normal, or might there be something wrong with it?